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Torsion-free subgroups of finite index in the Picard group are the fundamental groups of hyperbolic 3-manifolds. The Picard group is a polygonal product of finite groups. Recent work by Karrass. Pietrowski and Soli tar on the subgroups of a polygonal product make it feasible to calculate all the torsion-free subgroups of any finite index. This computation(More)
We describe the activation of a K+ current and inhibition of a Cl- current by a cyanoguanidine activator of ATP-sensitive K+ channels (KATP) in the smooth muscle cell line A10. The efficacy of U83757, an analogue of pinacidil, as an activator of KATP was confirmed in single channel experiments on isolated ventricular myocytes. The effects of U83757 were(More)